This title appears in the Scientific Report :
2000
Impact of global plasma parameters on transport suppression due to ExB shear
Impact of global plasma parameters on transport suppression due to ExB shear
Positive radial electric fields have been applied by means of electrode biasing to the plasma edge of TEXTOR-94 in order to study the transport and confinement changes with the generated ExB plasma flow. Discharges performed at various plasma parameters have shown a change in the transport reduction...
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Personal Name(s): | Jachmich, S. |
---|---|
Weynants, R. | |
Contributing Institute: |
Institut für Plasmaphysik; IPP |
Published in: | Czechoslovak journal of physics, 49 (1999) S. 191 |
Imprint: |
Praha
Academy of Sciences of the Czech Republic
1999
|
Physical Description: |
191 |
Document Type: |
Journal Article |
Research Program: |
TEC-ERM |
Series Title: |
Czechoslovak Journal of Physics
49 |
Subject (ZB): | |
Publikationsportal JuSER |
Positive radial electric fields have been applied by means of electrode biasing to the plasma edge of TEXTOR-94 in order to study the transport and confinement changes with the generated ExB plasma flow. Discharges performed at various plasma parameters have shown a change in the transport reduction and improvement of confinement, which polarisation experiments undergo. Theory predicts that in a low B-t-discharge less ExB shear has to be applied to reach the same level of transport suppression than in a high B-t-discharge, whereas a decrease of the isotopic mass should impede the formation of transport barriers. Our data have confirmed such expectations. In this paper we will try to disclose the possible influences of global plasma parameters on the underlying mechanism of transport reduction in improved confinement. |